Down Syndrome is also known as the Mongolian child. It is an inappropriate label for the disease. It is best to say Down Syndrome. The name is John Down, who discovered the disease. Down syndrome is not a human disease, but a mutation or something. Congenital malformation is caused by the presence of defects in the genes of the fetus occur during pregnancy, accompanied by congenital deformity some of the symptoms and diseases that affect the child affected, and children with Down syndrome share some physical and mental signs that are associated with this situation, and facilitates the identification of infected easily, Dow syndrome N is one of the most common genetic diseases among children and causes their mental retardation

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Thanks Dr.Hassan_Nima for this wonderful scientific answer

Genetic mutations Or taking medications that lead to the creation of a biological environment within the womb of the mother

Make the baby born Mongolia.

I agree with@ Hassan Nima

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